< script language ="javascript" > ... function check()...{var str=form1.Name.value;var SPECIAL_STR = "~!@%^&*();'"?><[]{}/|,:/=+—“”‘";for(i=0;i<str.length;i++)if (SPECIAL_STR.indexOf(str.charAt(i)) !=-1)...{alert("客户名不能以含有非法字符("+str.charAt(i)+")！");form1.Name.focus();return false;}return true;} </ SCRIPT > < FORM name =form1 onsubmit ="return check()" action ="" method =post > < input type ="text" name ="Name" > < input type ="submit" name ="Submit" value ="提交" > </ form >
